[3.10] bpo-44657: Fix instancemethod_call to use PyInstanceMethod_GET_FUNCTION (GH-27202)#27408

miss-islington merged 1 commit intopython:3.10python/cpython:3.10from

miss-islington:backport-ddf8ae3-3.10miss-islington/cpython:backport-ddf8ae3-3.10Copy head branch name to clipboard